CCleaner - FAQ
Optimization and Cleaning
Do I need to uninstall the old version of CCleaner when upgrading?
No, you can install newer versions over the top of older versions, without having to uninstall.
If you do uninstall an old version first, you will lose your existing settings.
Product News
May 24, 2012
CCleaner v3.19Farewell UAC warning dialog with new faster startup!
May 24, 2012
Defraggler v2.10Now with 30% faster defrag!
April 25, 2012
CCleaner v3.18Added Firefox 12 and Chrome 20 support!